have anyone using the ihi japan turbo before? how many psi and hp can u get from it?

 

I gather you don't have much experience with turbos. Asking how much psi a turbo has is irrelevant. Asking how much cfm it's rated for is a proper question. Anyway, Subaru's love these turbos (there is more than one IHI turbo). Here's a quick spreadsheet so take your pick... http://www.mrtrally.com.au/performan...turbo-data.pdf

 

I assume you're talking about the Apexi RX6 kit, which is an IHI turbo... In any case, they probably max out (exit efficiency) around 425+whp, so well after the stock fuel system is maxed out

 

^ People have done about 400 hp on the factory injectors before. https://www.rx7club.com/showpost.php...70&postcount=4